March 16 in San Antonio history…

1956
The San Antonio City Council pledges to end segregation at municipal swimming pools.

1958
Trinity University Moon watchers caught sight of the second Russian satellite (Sputnik 2) at 6:11 a.m. Friday. Dr. Seabase, head of the Moonwatch team, said the satellite has been orbiting rapidly since March 3 and has become difficult to calculate when the artificial moon is expected to pass over this area.